package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.mapper.EmployeeMapper;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@RestController
@RequestMapping("/employee")
@Slf4j
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * @description:员工登录
     * @author: yanhongwei
     * @date: 2023/5/13 19:39
     * @param: [request, employee]
     * @return: com.itheima.reggie.common.R<com.itheima.reggie.entity.Employee>
     **/
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());

        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if(emp==null){
            return R.error("登录失败");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态,如果为已禁用状态,则返回员工已禁用结果
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id承入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);


    }


    @RequestMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");

        return R.success("退出成功");
    }

    /**
     * @description:添加员工
     * @author: yanhongwei
     * @date: 2023/5/16 11:26
     * @param: [request, employee]
     * @return: com.itheima.reggie.common.R<java.lang.String>
     **/
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息",employee.toString());

        //设置初始密码123456,需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //设置创建时间
        /*employee.setCreateTime(LocalDateTime.now());
        //设置更新时间
        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        Long empId=(Long)request.getSession().getAttribute("employee");

        //设置创建用户id
        employee.setCreateUser(empId);
        //设置更新用户id
        employee.setUpdateUser(empId);*/

        employeeService.save(employee);

        return R.success("新增员工成功");


    }


    /**
     * @description:员工信息分页查询
     * @author: yanhongwei
     * @date: 2023/5/17 15:08
     * @param: [page, pageSize, name]
     * @return: com.itheima.reggie.common.R<com.baomidou.mybatisplus.extension.plugins.pagination.Page>
     **/
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo=new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序添加
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);


        return R.success(pageInfo);
    }
    
    /**
     * @description:根据id修改员工信息
     * @author: yanhongwei 
     * @date: 2023/5/17 20:01
     * @param: [request, employee]
     * @return: com.itheima.reggie.common.R<java.lang.String>
     **/
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        /*Long empId=(Long)request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> selectOne(@PathVariable("id") Long id){
        log.info("获取到Id:"+id);

        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper();
        queryWrapper.eq(Employee::getId,id);
        Employee one = employeeService.getOne(queryWrapper);

        if(one!=null){
            return R.success(one);
        }
        return R.error("没有查询到对应员工信息");
    }

}
